[Analysis: Bitcoin Mining on the Edge of Breakeven, Undergoing the Most Complex Structural Adjustment] According to BIT analysis, Bitcoin mining is undergoing the most complex structural adjustment since the protocol's inception. Bitcoin's price remains near $61,000, with the network's total hash rate approaching 1 ZH/s, reaching historical highs. However, the industry's economic landscape presents a starkly different picture: profit margins are under continuous pressure, incentive mechanisms are misaligned, and the 2028 halving will force the entire industry into systemic reevaluation. Five independent analytical frameworks (production cost model, hash rate and price divergence analysis, transaction fee revenue analysis, overall security budget, and industry profit and loss assessment) all point to the same conclusion: Bitcoin mining is currently operating on the edge of breakeven, with no credible alternative revenue sources emerging within pure mining operations. However, this does not equate to industry collapse.